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Date of Publication:2022-10-09

Journal:催化学报

Volume:30

Issue:1

Page Number:78-82

ISSN No.:0253-9837

Abstract:Tetramethylammonium thiomolybdate, being used as a precursor for molybdenum disulfide, was synthesized at room temperature using an aqueous solution of ammonium tetrathiomolybdate and tetramethylammonium chloride. Molybdenum disulfide was prepared by the decomposition of tetramethylammonium thiomolybdate or ammonium tetrathiomolybdate and was characterized by N-2, physisorption, X-ray diffraction, and scanning electron microscopy. The results showed that molybdenum disulfide prepared from tetramethylammonium thiomolybdate had higher specific Surface area of 108 m(2)/g Will, narrower pore size distribution of 4-12 nm, while the sample prepared from ammonium tetrathiomolybdate had a specific surface area of only 16 m(2)/g. The crystalline of the molybdenum disulfide prepared from tetramethylammonium thiomolybdate was lower than that from ammonium tetra thiomolybdate. The high-surface-area molybdenum disulfide possessed higher catalytic activity and higher selectivity for 1,2,3,4-tetrahydroquinoline in the selective hydrogenation of quinoline in a fixed-bed reactor. The catalytic performance of high-surface-area molybdenum disulfide was similar to that Of noble metal catalysts in the selective hydrogenation Of quinoline.

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